Causal wave mechanics and the advent of complexity; 2, dynamic uncertainty in quantum systems and the correspondence principle

The intrinsic multivaluedness of the effective dynamical functions, revealed in part I of this series of papers, is interpreted as the origin of the true dynamical (in particular, quantum) chaos. The main postulate of the fundamental dynamic uncertainty thus formulated is specified for Hamiltonian quantum systems and applied to quantum chaos description in periodically perturbed systems. The ordinary semiclassical transition in our quantum-mechanical results leads to the reproduction of the main features of chaotic behaviour of the same systems known from classical mechanics, which permits one to "re-establish" the correspondence principle for chaotic systems. The causal dynamical randomness in the extended quantum mechanics is not restricted, however, to semiclassical conditions and occurs also in essentially quantum regimes, although partial "quantum suppression of chaos" does exist and is specified in our description, as well as other particular types of the quantum chaotic behaviour